A study was conducted to determine the effects of electromyographic (EMG) feedback/relaxation training on the achievement, cognitive and motor test results, and observed behavior change of learning disabled, mentally retarded, control, and nondiagnosed children manifesting learning problems (all elementary age). Treatment consisted of 10-minute EMG feedback, 50 minutes of handwriting training, and home practice of relaxation using audio cassettes. Training was 3 days per week for 5 weeks. Results indicated significant gains by all experimental groups over controls on all variables, including reading, spelling, arithmetic, auditory memory, eye-hand coordination, IQ, and observed behavior. (Author/SBH)